INTRODUCTION TO SIMPLE HARMONIC MOTION

What do you think it means?

TYPES:

SHO
*Simple (one restoring force) proportional to displacement from
equilibrium…. Harmonic (periodic, repeats)*

*Motion is like a wave……. Repeats over one : period,
cycle, wave, revolution, swing, back and forth, up and down, etc…*

WAVES

CIRCLE

ENERGY

DEFINITION:

AMPLITUDE
* Height or Strength of wave.
Distance/Angle from equilibrium to maximum. Like height of water wave, angle of
swing on pendulum, loudness of sound, brightness of light.*

EQUILIBRIUM*
Rest point*

PERIOD
* Time per cycle (wave, swing,
revolution, etc…)*

* T
= sec/wave*

FREQUENCY*
Cycles per time, f = 1/T waves/sec… Hertz*

SPRING

Hooke’s
Law * F = k X , F is the restoring force and x is the
displacement from rest. Applies to all SHM not just springs.*

Spring
Constant * k = F/x =
Force/Distance…. N/m k is
the spring constant that is dependent on the tightness, makeup of the spring.*

Pendulum: